This page explains how Sheldon Silverstein (USATT# 55910)'s rating went from 1254 to 1188 at the 2nd Brooklyn Polytechnic Open held on - 27 Sep 2009. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.